This update fixes a ton of different bugs, as well as fixes the empty world glitch.

CHANGES:
- Re-Enabled Guardian spawning
- Added support for metadata saving

BUG FIXES:
- Fixed worlds from sometimes spawning with nothing
- Fixed storages from not properly lowering max gold
- Fixed the missing Essence Collector sprite
- Fixed the missing Iridium Collector sprite
- Fixed drones not saving properly after reloading
- Fixed storages not saving properly after reloading
- Fixed drones sometimes replacing a port when switching
- Fixed pipetting from not working with nothing selected
- Fixed locked buildings from being placeable
- Fixed enemies not spawning beyond 10,000 heat
- Fixed removing buildings from not updating storages
- Fixed issues with Guardian hitreg